I suspect, the problem lies in the limit computation.
Ralf
(1) -> i := integrate(exp(-a^2*x^2),x)::Expression(Integer)
+--+
+---+ | 2
\|%pi erf(x\|a )
(1) -----------------
+--+
| 2
2 \|a
Type:
Expression(Integer)
(2) -> limit(erf(x),x=%plusInfinity)
(2) 1
Type:
Union(OrderedCompletion(Expression(Integer)),...)
(3) -> limit(erf(sqrt(a^2)*x),x=%plusInfinity)
(3) "failed"
Type:
Union("failed",...)
On 11/8/18 1:05 PM, Marduk wrote:
> Dear all,
>
> I just tried calculating this integral (I defined inf ==> %plusInfinity)
>
> integrate(exp(-a^2*x^2),x=-inf..inf)
>
> in FriCAS 1.3.4 and it failed. Why?
>
> Best regards,
> Marduk
>
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